Argon J5 connector wiring

This article explains the internal circuity behind J5 connector of Argon servo drive.

J5 connector pin-out and electrical ratings

• Overview: Argon wiring
• I/O electrical ratings: Argon specifications

Pin groups

Internal schematics of pin groups

These images show the circuity behind the J5 connector inside the Argon drive (simplified schematics). Left side end represents J5 pins and right side continues to drive internal circuity.

• 

  High speed digital input circuity inside the drive. Total 1 of these circuits.

• 

  Analog input circuity inside the drive. Total 2 of these circuits.

• 

  Digital output circuity inside the drive. Total 4 of these circuits.

• 

  Digital input circuity inside the drive. D27 protects optocoupler from reverse polarity and ESD. Total 4 of these circuits.

Pin-out

Pin #	Pin name	Electrical	Isolated	Function¹
1	GND	Supply	No²	Ground
2	+5V_OUT	Supply		5V output
3	HSIN1-	High speed digital input		Step pulse train (in Pulse and direction setpoint mode) Quadrature A channel (in quadrature setpoint mode) PWM input direction (in PWM+Dir setpoint mode)
4	HSIN1+	High speed digital input
5	HSIN2-	High speed digital input		Direction signal of pulse train (in Pulse and direction setpoint mode) Quadrature B channel (in quadrature setpoint mode) PWM (in PWM and PWM+Dir setpoint modes)
6	HSIN2+	High speed digital input
7	ANAIN1-	Analog input		Analog input setpoint
8	ANAIN1+	Analog input
9	ANAIN2-	Analog input		Direction reversal signal for analog input setpoint signal.
10	ANAIN2+	Analog input
11	GPO1-	Digital output	Yes²	Servo ready status. True when drive is initialized and ready to accept user commands/setpoint.
12	GPO1+	Digital output
13	GPO2-	Digital output		Position/velocity control mode tracking error warning status. True when tracking error has reached more than user configured 1/8 of fault limit value or when drive is not enabled. May be used by controller to throttle the setpoint thus avoid triggering an tracking error fault. May require FW upgrade.
14	GPO2+	Digital output
15	GPO3-	Digital output		Fault stop status. True when drive is stopped due to fault.
16	GPO3+	Digital output
17	GPO4-	Digital output		Braking status. Set true when drive attempts to brake motor.
18	GPO4+	Digital output
19	GPI1-	Digital input		Home switch input.
20	GPI1+	Digital input
21	GPI2-	Digital input		Positive feed enable input. Used for axis limit switches.
22	GPI2+	Digital input
23	GPI3-	Digital input		Negative feed enable input. Used for axis limit switches.
24	GPI3+	Digital input
25	GPI4-	Digital input		Clear drive faults input. Transition from false to true attempts to reset active faults of drive. If drive is simultaneously in enabled state, motor will start moving immediately.
26	GPI4+	Digital input

¹) This is the default function with stock firmware. Function may be different in future or custom firmware versions.

²) Non-isolated lines are referenced to GND pin / J3 V- terminal. Isolated lines have functional isolation between GND and other isolated +-/- pairs.

Wiring guide

Supply

Supply pins output a regulated 5V voltage to external circuits. GND pin is tied to J3 connector V- terminal.

Electrical properties

• Output voltage 4.9-5.2 V
• Maximum load 500 mA
• Maximum injected current -10 mA

High speed digital input group

HSIN is differential digital input capable of receiving digital signals up to 4 MHz.

Electrical properties

• Maximum voltage to HSINx+/- pins referenced to GND: -0.5 to 6V. Nominal 3.3 or 5.0V.
• Maximum injected current +/- 10 mA
• When negative input (HSINx-) is left floating, it floats around 2.5V
• Input state reads logic 1 when voltage on positive pin is greater than voltage on negative pin, otherwise it's logic 0

Wiring when driving using differential source

• Positive outputs of source to HSINx+
• Negative outputs of source to HSINx-
• GND must be connected to source ground

Wiring when driving using single ended source (TTL, CMOS or open collector)

• Outputs of source to HSINx+
• Leave HSINx- floating
• GND must be connected to source ground

Analog input group

Analog input accepts ±10V from and may be used as setpoint signal. Electrical properties

• Input impedance ~10 kΩ
• Maximum ANAINx+/- pin voltage vs GND ±25V
• Maximum injected current ±10 mA
• Sampling resolution 12 bits

Wiring to differential signal source

• Connect positive output to ANAINx+
• Connect negative (inverted) output to ANAINx-
• Connect source ground to GND

Wiring to single ended signal source

• Connect output to ANAINx+
• Connect source ground to ANAINx-
• Connect source ground to GND

Wiring to 0-10V analog output with digital direction output:

• Follow the earlier guidelines but connect controller's direction signal to ANAIN2+ and the ground reference of digital output to ANAIN2-. Setpoint gets inverted inside the drive if ANAIN2 voltage is between 3-24VDC and non-inverted between 0-3VDC. May require FW upgrade.

Digital output group

Digital output is an optoisolated transistor output to drive various types of inputs of target devices (logic gates, relays, lights etc) Electrical properties

• Load voltage range 3-24V
• Maximum allowed load 50 mA
• Logic 1 state equals conducting state of optocoupler transistor (current flows from GPO+ to GPO- pins), logic 0 stops current flow between GPO+ to GPO- pins.
• + to - pin voltage drop at 50 mA less than 2 VDC

Wiring to logic gate input (CMOS or TTL)

• Connect GPO+ pin to target VCC (typ 5V)
• Connect GPO- pin to target input pin (so input pin is pulled to 5V when output state is logic 1)

Digital input group

Connection from electromechanical switch or relay to isolated digital input. PSU may be external power supply or 5V supply from J5 connector.

Digital inputs are optoisolated (floating potential) inputs for general purpose control signals. Electrical properties

• Signal voltage range 3-24V
• Logic 0 when difference between +/- inputs less than 1.5V, logic 1 when voltage is between 2.9-25V
• Current needed to drive logic 1 is 0.8-9 mA depending on input voltage
• Maximum voltage difference between GPIx+/- inputs 27 VDC
• Maximum voltage difference between GPIx+/- inputs vs GND 120 VDC

Connection to electromechanical switch or relay

• See schematics image in right side

Connection to CMOS source

• Connect source output to GPIx+ input
• Connect source ground to GPIx- input

Connection to open collector or TTL source

• Connect source output to GPIx- input
• Connect source VCC (typ 5V) to GPOx+ input

Examples

Wiring axis limit and home switches to J5

To operate the motor, limit switches must be connected to the GPI1 and GPI2. Feeding logic 1 to one of these ports enables axis motion feed in certain direction.

The behavior of feed enable signals can be configured via Granity machine tab. Logic 1 to these pins is required for drive operation:

• GPI1 - enable positive direction feed.
• GPI2 - enable negative direction feed.

Home switch (optional):

• GPI3 - home switch input. Polarity can be configured via Granity.

In the image below A way to connect switches to J5 port. Inputs are supplied by the J5 connector 5V output. Alternatively the switches may be also supplied from an external 5-24VDC supply.

The example below illustrates an alternative way of connecting limit switches that are connected in series. However this way requires that axis is being manually pulled away from end of travel if either switch is open as drive doesn't know which way is the safe running direction.

Alternative limit switch wiring considerations

It is possible to connect limit switches several way, or omit them completely. The table below summarizes the different methods:

Method #	Connections / configurations	End of travel causes a fault stop state	End of travel causes active braking of motor	Can move motor electrically out end of travel	Remarks
A	Connect limit switches independently to GPI2 and GPI3 inputs	Yes (but depends on parameterization)	Yes (but depends on parameterization)	Yes	This is the most typical method used
B	Connect limit switches in series to GPI2 and GPI3 inputs parallel	Yes (but depends on parameterization)	Yes (but depends on parameterization)	No	Drive has info only that limit switch is open but no info about which way is safe to move
C	No limit switches, instead use homing function (position control mode only) and set soft travel limits by parameterization	No	Yes	Yes	Sensorless & wireless solution
D	Connect limit switches Safe torque off input	Yes	No, motor may free wheel	No	A very secure way to remove torque from motor. If such feature is desired, it's recommended to install second pair of limit switches or use soft travel limits that stop motion before the STO switches, so STO switches would serve only as backup.
E	Connect limit switch to enable drive input	No	Yes	Yes

Pulse and direction setpoint

This example shows how to wire a typical single ended pulse and direction controller.

Quadrature signal setpoint

This example shows how to wire a typical single ended quadrature controller.

PWM signal setpoing

This example shows how to wire a typical single ended PWM controller.

Analog signal setpoint

This example shows how to wire a typical single ended Analog setpoint controller. Maximum analog signal voltage is +/-10V.

0-10V analog input with digital direction signal

Follow the earlier guidelines but connect controller's direction signal to ANAIN2+ and the ground reference of digital output to ANAIN2-. Setpoint gets inverted inside the drive if ANAIN2 voltage is between 3-24VDC and non-inverted between 0-3VDC. May require FW upgrade.

Complete example with pulse & direction

The examples above can be combined to achieve the user goals. The example below has complete set of I/O features used.

• Pulse & direction set point
• Clear faults output (off-on-off pulse generated by controller user if FAULT input goes on)
• Monitoring of drive state: servo ready, tracking error warning, drive fault, motor braking status
• Axis limit switches & home switch

Notes:

• The controller in the example has 5 volt single ended inputs & outputs
• Controller inputs have pull-down resistor or other means to ensure off or 0 state when input is floating
• It's not required to to monitor & control the I/O lines at controller

Complete example with differential analog setpoint

Same as above expect this time the setpoint signal is a differential analog voltage output (max +/-10V).

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